Up to 08/2009

SUSPENSION CONTROL: ACTIVE STABILIZER SUSPENSION SYSTEM: C191A: Malfunction in Signal from Steering Sensor to Rear Active Stabilizer Control ECU


DESCRIPTION

If the rear active stabilizer control ECU receives a steering sensor malfunction signal, DTC C191A is output. The steering sensor is diagnosed by the skid control ECU. If electronically controlled brake system related DTCs are output, perform a diagnosis of the electronically controlled brake system. If no electronically controlled brake DTCs are output, there may be a malfunction in the rear active stabilizer control ECU.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (READY) and the Techstream on.

(d) Check that no electronically controlled brake system DTCs are output Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC is not output.

NG -- GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Electronically Controlled Brake System

OK -- REPLACE ACTIVE STABILIZER CONTROL ECU ASSEMBLY